@function Torem($px){
    @return $px/200+rem
}
.horizontalTabBar{
    padding: 0 15px;
    display: flex;
    justify-content: space-between;
    height: 50px;
    font-size: 20px;
    line-height: 50px;
    z-index: 99;
    span{
        z-index: 99999;
    }
    section{
        width: 80%;
        overflow: hidden;
        ul{
           width: 800px;
            li{
                float: left;
                margin: 0 5px;
            }
        }
    }
}
.allTabs{
    width: 100%;
    height: 84.7vh;
    background: rgba(0,0,0,.5);
    position: fixed;
    top: 0.52rem;
    z-index: 9999;
    div{
        background-color: white;
        padding-left:15px;
        section{
            display: flex;
            justify-content: space-between;
            height: Torem(60);
            line-height:Torem(60);
            font-size: Torem(28);
            margin-right: 15px;
        }
        ul{
            padding-top: Torem(24);
            height: Torem(311);
            li{
                float: left;
                width: Torem(146);
                height: Torem(54);
                margin: 0 0 Torem(30) Torem(25);
                border: Torem(1) solid #cccccc;
                text-align: center;
                line-height: Torem(54);
                background-color: #fafafa;
                border-radius: 5px;
            }
        }
    }
}

.icon-arrow {
    /*设置所有动画的效果：0.3s 淡出效果*/
    transition: all .3s ease-out;
}
.icon-arrow-rotate {
    /*旋转180度*/
    transform: rotate(180deg);
}